21204848

素因数分解:

$2^4\times 7^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:119

約数の個数: 120

約数和(自身を含む): 53179632

約数和(自身を除く): 31974784

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 37, 43, 49, 56, 68, 74, 86, 98, 112, 119, 136, 148, 172, 196, 238, 259, 272, 296, 301, 344, 392, 476, 518, 592, 602, 629, 688, 731, 784, 833, 952, 1036, 1204, 1258, 1462, 1591, 1666, 1813, 1904, 2072, 2107, 2408, 2516, 2924, 3182, 3332, 3626, 4144, 4214, 4403, 4816, 5032, 5117, 5848, 6364, 6664, 7252, 8428, 8806, 10064, 10234, 11137, 11696, 12728, 13328, 14504, 16856, 17612, 20468, 22274, 25456, 27047, 29008, 30821, 33712, 35224, 35819, 40936, 44548, 54094, 61642, 70448, 71638, 77959, 81872, 89096, 108188, 123284, 143276, 155918, 178192, 189329, 216376, 246568, 286552, 311836, 378658, 432752, 493136, 573104, 623672, 757316, 1247344, 1325303, 1514632, 2650606, 3029264, 5301212, 10602424, 21204848]

約数ペア:

[(1, 21204848), (2, 10602424), (4, 5301212), (7, 3029264), (8, 2650606), (14, 1514632), (16, 1325303), (17, 1247344), (28, 757316), (34, 623672), (37, 573104), (43, 493136), (49, 432752), (56, 378658), (68, 311836), (74, 286552), (86, 246568), (98, 216376), (112, 189329), (119, 178192), (136, 155918), (148, 143276), (172, 123284), (196, 108188), (238, 89096), (259, 81872), (272, 77959), (296, 71638), (301, 70448), (344, 61642), (392, 54094), (476, 44548), (518, 40936), (592, 35819), (602, 35224), (629, 33712), (688, 30821), (731, 29008), (784, 27047), (833, 25456), (952, 22274), (1036, 20468), (1204, 17612), (1258, 16856), (1462, 14504), (1591, 13328), (1666, 12728), (1813, 11696), (1904, 11137), (2072, 10234), (2107, 10064), (2408, 8806), (2516, 8428), (2924, 7252), (3182, 6664), (3332, 6364), (3626, 5848), (4144, 5117), (4214, 5032), (4403, 4816)]